﻿// The Nova Project by Ken Beckett.
// Copyright (C) 2007-2012 Inevitable Software, all rights reserved.
// Released under the Common Development and Distribution License, CDDL-1.0: http://opensource.org/licenses/cddl1.php

using System.Collections.Generic;

using Nova.CodeDOM;

namespace Nova.UI
{
    /// <summary>
    /// The view model for a <see cref="CodeDOM.GenericMethodDecl"/>.
    /// </summary>
    public class GenericMethodDeclVM : MethodDeclVM
    {
        #region /* STATICS */

        internal static new void AddViewModelMapping()
        {
            CreateViewModel.Add(typeof(GenericMethodDecl),
                delegate(CodeObject codeObject, bool isDescription, Dictionary<CodeObject, CodeObjectVM> dictionary) { return new GenericMethodDeclVM((GenericMethodDecl)codeObject, isDescription, dictionary); });
        }

        #endregion

        #region /* FIELDS */

        protected ChildListVM<TypeParameterVM> _typeParameterVMs;
        protected ChildListVM<ConstraintClauseVM> _constraintClauseVMs;

        #endregion

        #region /* CONSTRUCTORS */

        /// <summary>
        /// Create a view model instance for the specified <see cref="CodeDOM.GenericMethodDecl"/>.
        /// </summary>
        public GenericMethodDeclVM(GenericMethodDecl genericMethodDecl, bool isDescription, Dictionary<CodeObject, CodeObjectVM> dictionary)
            : base(genericMethodDecl, isDescription, true, true, dictionary)
        {
            _typeParameterVMs = CreateListVM<TypeParameter, TypeParameterVM>(genericMethodDecl.TypeParameters, dictionary);
            _constraintClauseVMs = CreateListVM<ConstraintClause, ConstraintClauseVM>(genericMethodDecl.ConstraintClauses, dictionary);
        }

        #endregion

        #region /* PROPERTIES */

        /// <summary>
        /// The underlying <see cref="CodeDOM.GenericMethodDecl"/> model.
        /// </summary>
        public GenericMethodDecl GenericMethodDecl
        {
            get { return (GenericMethodDecl)CodeObject; }
        }

        /// <summary>
        /// The list of <see cref="TypeParameter"/>s.
        /// </summary>
        public ChildListVM<TypeParameterVM> TypeParameterVMs
        {
            get { return _typeParameterVMs; }
        }

        /// <summary>
        /// True if there are any <see cref="TypeParameter"/>s.
        /// </summary>
        public bool HasTypeParameterVMs
        {
            get { return (_typeParameterVMs != null && _typeParameterVMs.Count > 0); }
        }

        /// <summary>
        /// The number of <see cref="TypeParameter"/>s.
        /// </summary>
        public int TypeParameterVMCount
        {
            get { return (_typeParameterVMs != null ? _typeParameterVMs.Count : 0); }
        }

        /// <summary>
        /// The list of <see cref="ConstraintClause"/>s.
        /// </summary>
        public ChildListVM<ConstraintClauseVM> ConstraintClauseVMs
        {
            get { return _constraintClauseVMs; }
        }

        /// <summary>
        /// True if there are any <see cref="ConstraintClause"/>s.
        /// </summary>
        public bool HasConstraintClauseVMs
        {
            get { return (_constraintClauseVMs != null && _constraintClauseVMs.Count > 0); }
        }

        #endregion

        #region /* METHODS */

        #endregion

        #region /* RENDERING */

        internal override void RenderName(CodeRenderer renderer, RenderFlags flags)
        {
            RenderFlags passFlags = (flags & (RenderFlags.PassMask & ~(RenderFlags.Description | RenderFlags.ShowParentTypes)));
            base.RenderName(renderer, flags);
            if (HasTypeParameterVMs)
                TypeParameterVM.RenderTypeParameters(renderer, _typeParameterVMs, passFlags);
        }

        protected override void RenderSuffix(CodeRenderer renderer, RenderFlags flags)
        {
            if (!HasConstraintClauseVMs && !flags.HasFlag(RenderFlags.Description))
                RenderTerminator(renderer, flags);
        }

        protected override void RenderAfter(CodeRenderer renderer, RenderFlags flags)
        {
            ConstraintClauseVM.RenderConstraints(renderer, _constraintClauseVMs, flags | RenderFlags.HasTerminator);
            base.RenderAfter(renderer, flags);
        }

        public override void UnRender()
        {
            ChildListHelpers.UnRender(_typeParameterVMs);
            ChildListHelpers.UnRender(_constraintClauseVMs);
            base.UnRender();
        }

        #endregion
    }
}
